namespace ConsoleApp3._1028;

using System.Collections.Generic;

public interface UserService
{
    bool Register(string username, string password, string confirmPassword);
    
    bool Login(string username, string password);
    
    void ShowMainMenu();
    
    void HandleUserChoice(int choice);
    
    List<User> GetAllUsers();
    
    bool DeleteUser(string username);
    
    bool ValidateUsername(string username);
        
    bool ValidatePassword(string password);
}